A proposed direct measurement of cross section at Gamow window for key reaction 19F(p, a) 16 O in Asymptotic Giant Branch stars with a planned accelerator in CJPL

作者：He, JianJun^*; Xu, ShiWei; Ma, ShaoBo; Hu, Jun; Zhang, LiYong; Fu, ChangBo; Zhang, NingTao; Lian, Gang; Su, Jun; Li, YunJu; Yan, ShengQuan; Shen, YangPing; Hou, SuQing; Jia, BaoLu; Zhang, Tao; Zhang, XiaoPeng; Guo, Bing; Kubono, Shigeru; Liu, WeiPing

来源：Science China Physics,Mechanics & Astronomy, 2016, 59(5): 652001.

DOI：10.1007/s11433-016-5797-5

• Jinping Underground Nuclear Astrophysics laboratory (JUNA)
• direct measurement
• Gamow window
• cross section
• AGB star
• nucleosynthesis

In 2014, the National Natural Science Foundation of China (NSFC) approved the Jinping Underground Nuclear Astrophysics laboratory (JUNA) project, which aims at direct cross-section measurements of four key stellar nuclear reactions right down to the Gamow windows. In order to solve the observed fluorine overabundances in Asymptotic Giant Branch (AGB) stars, measuring the key 19F(p,a) 16O reaction at effective burning energies (i.e., at Gamow window) is established as one of the scientific research sub-projects. The present paper describes this sub-project in details, including motivation, status, experimental setup, yield and background estimation, aboveground test, as well as other relevant reactions.

• 出版日期2016-5
• 单位中国科学院大学; 中国科学院近代物理研究所; 中国原子能科学研究院; 上海交通大学